//
// Created by tianq on 24-12-9.
//
#include <iostream>
#include <random>
using namespace std;

int main() {
    constexpr int n = 6;  // n: number count

    random_device rd;
    mt19937_64 rng(rd());
    uniform_int_distribution dist(1, 20); // set range for random generator here

    cout << n << endl;
    for (int i = 0; i < n; i++) // n points
        cout << dist(rng) << " ";
    cout << endl;
}
